could prevent
Regelmä&szlig;iges Verb: prevent - prevented- prevented

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could prevent
you could prevent
she could prevent
we could prevent
you could prevent
they could prevent 	I could be preventing
you could be preventing
she could be preventing
we could be preventing
you could be preventing
they could be preventing	I could have prevented
you could have prevented
she could have prevented
we could have prevented
you could have prevented
they could have prevented	I could have been preventing
you could have been preventing
she could have been preventing
we could have been preventing
you could have been preventing
they could have been preventing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't prevent
you couldn't prevent
she couldn't prevent
we couldn't prevent
you couldn't prevent
they couldn't prevent 	I couldn't be preventing
you couldn't be preventing
she couldn't be preventing
we couldn't be preventing
you couldn't be preventing
they couldn't be preventing	I couldn't have prevented
you couldn't have prevented
she couldn't have prevented
we couldn't have prevented
you couldn't have prevented
they couldn't have prevented	I couldn't have been preventing
you couldn't have been preventing
she couldn't have been preventing
we couldn't have been preventing
you couldn't have been preventing
they couldn't have been preventing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I prevent?
could you prevent?
could she prevent?
could we prevent?
could you prevent?
could they prevent? 	could I be preventing?
could you be preventing?
could she be preventing?
could we be preventing?
could you be preventing?
could they be preventing? 	could I have prevented?
could you have prevented?
could she have prevented?
could we have prevented?
could you have prevented?
could they have prevented? 	could I have been preventing?
could you have been preventing?
could she have been preventing?
could we have been preventing?
could you have been preventing?
could they have been preventing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I prevent?
couldn't you prevent?
couldn't she prevent?
couldn't we prevent?
couldn't you prevent?
couldn't they prevent? 	couldn't I be preventing?
couldn't you be preventing?
couldn't she be preventing?
couldn't we be preventing?
couldn't you be preventing?
couldn't they be preventing? 	couldn't I have prevented?
couldn't you have prevented?
couldn't she have prevented?
couldn't we have prevented?
couldn't you have prevented?
couldn't they have prevented? 	couldn't I have been preventing?
couldn't you have been preventing?
couldn't she have been preventing?
couldn't we have been preventing?
couldn't you have been preventing?
couldn't they have been preventing?